Б) !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Оно очень лёгкое))
9х+х-9х=5
х=5
1м-4дм=10дм-4дм=6дм
Ответ: 6дм
<span>16785 = 3 · 3 · 5 · 373
</span><span>(16785 : 3 = 5595)
</span><span>(5595 : 3 = 1865)
</span><span>(1865 : 5 = 373)
</span><span>(373 : 373 = 1)</span>